Prescott microbiology 7th edition pdf disease played a huge role in the decimation of many indigenous populations in the Americas. Smallpox, typhus, influenza, and diphtheria are a few diseases that were brought over from Europe to the Americas. Smallpox played a huge role in the fall of the Aztec empire by the Spanish in the early s.

This enabled the Spanish to colonize the land, extract its resources, and establish trading routes. A smallpox epidemic broke out in the Aztec capital of Tenochtitlan in This would decrease the number of people available to fight against the Spanish conquest.

It also believed that key military leaders, including the emperor, succumbed to smallpox during this time. It is also important to note that the number only represents the fatalities. It is likely that smallpox affected a larger percentage of the population. Smallpox causes an extremely debilitating disease and is characterized by fever, fatigue, muscle pain, and rash.

The most severe form is the hemorrhagic form, which causes bleeding from body orifices. With many people sick from smallpox, it is likely prescott microbiology 7th edition pdf there were not very many people to defend the city against Spanish attack. The reason why smallpox was so devastating to the Aztecs was because the people had no immunity to the disease.

The Spanish had lived with smallpox for thousands of prescott microbiology 7th edition pdf and thus more likely to have caught it and have immunity to the disease. If a population contains a higher proportion of immune people, then those who are not immune are more protected against the disease. This shy fx original nuttah google because it is less likely that the disease will spread through the population and less of a chance that someone will contract the disease.

If the Aztecs had access to a smallpox vaccination or if they had been in contact with smallpox before, the smallpox epidemic may never have happened. There might have been more Aztecs to defend the city and it may have been more difficult for the Spanish to defeat an army that had a home-field advantage.

It could be argued, however, that the Spanish were so technologically superior that they may have still defeated the Aztecs.

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